The paper presents the analysis of the structures of four novel sulfonamide-based bis- amidines, and four novel interesting intermediates leading to them, named bis-nitriles, in solid-state based on 13C CP/MAS NMR spectroscopy and theoretical calculations of shielding constants at DFT level of theory. We have observed double 13C resonances in solid-state spectra as compared with solution spectra. The considerations of experimental ...
